Basic To Do prototype based on: https://www.sketchappsources.com/free-source/3625-basic-to-do-app-design-sketch-freebie-resource.html

Safe/Combination lock

A calendar picker concept based on Ramotion's example on Dribbble, https://dribbble.com/shots/1782092-Survey-Platform-Design

A demo showcasing custom device size, animations and key actions. Use arrow keys to switch between "Play" and "Settings", and X and Z keys to navigate.

Super simple - Showing how to display from a form

A basic example of reproducing Instagram info bars behaviour. A list header floats over the list's items and remains visible at the edge of the screen until it is replaced by the next list header

Designers can use their favorite design tools like Photoshop and Sketch to design the finest details of the user interface for their app. Single or multiple touch interactions can be applied on any UI element (layer) on each screen. Sophisticated animations can be created on-screen as well as screen transitions, using the powerful timeline animation features that Proto.io offers.

Using color adjustment and filters, I've simulated the iOS spotlight animation. Learn how you can apply these filters at https://proto.io/en/new-features/adjustments-filters/